(4) From the point of development and supervision respectively, synthetically using the knowledge of project management grey mathematics real estate development and so on, elaborate discussed the project feasible need project risk dynamic evaluation and the interim evaluation of phase implement result, bring forward the new evaluation method.

On the theoretical basis of grey mathematics,this paper focuses upon the study of the grey properties of groundwater system, the concept of grey distributed model and the method for solving the model, and gives an axample of specific calculation, whereby, compared with the classical mathematical model, the grey mathematical model has a completely meaning new meaning theoretically and methodologically.

In this article, the principle of building status analysis model by means of grey mathematics and its basic structure is expounded, the cruxes of general exellent GM—Model and the concept of grey development correlativity are analysed, the widespread application of this model is showed with examples

In this article, the principle of building status analysis model by means of grey mathematics and its basic structure is expounded, the cruxes of general exellent GM—Model and the concept of grey development correlativity are analysed, the widespread application of this model is showed with examples

To suit the needs of grey prediction, grey decision making and grey control concerning the theory of tge grey system and for the development or grey mathematics, the abstract concept of the grey number matrix of the interval type is proposed. A matrix which is composed of grey numbers of the interval type is called a grey number matrix of the interval type, or a grey matrix for short and denoted by (G) =(Gat,b ). The operational properties of the grey matrix are discussed...

To suit the needs of grey prediction, grey decision making and grey control concerning the theory of tge grey system and for the development or grey mathematics, the abstract concept of the grey number matrix of the interval type is proposed. A matrix which is composed of grey numbers of the interval type is called a grey number matrix of the interval type, or a grey matrix for short and denoted by (G) =(Gat,b ). The operational properties of the grey matrix are discussed at length, which are the same as those of a real matrix.

本文给出了区间型灰数矩阵的定义;讨论了区间型灰数矩阵的基本运算.为进一步研究灰色系统的预测、决策、控制等问题提供了一种数学工具.

The interval number is a class of special grey numbers. Its four operations have been widely used in grey mathematics, theory of probability, and unascertained mathematics. The addition and subtraction of interval numbers have distinct direct demonstration. The multiplication and division operations deal with variation of sign, which is comparatively complicated. This paper gives the direct demonstration of multiplication and division operations.